Ok, here's my theory of how it went down, changed based on all we've learned today.

Military Intelligence, beginning on November 7th, began to scope the scene over the area in preparation of its operation.

The hostiles anticipated a possible raid at their location,

anticipated it would occur on December 24th or 25th with the least amount of traffic and citizens about,

and also anticipated Milint would access the server area via a street access.

There were likely only two ways to access.

They then planned to prevent access at one entry, and set up an ambush at the other.

They would let Milint enter the uncovered access, with hostiles waiting for them below, and those in ambush would enter in behind them.

On the night before the raid, one of the hostiles, Anthony Quinn Warner, maybe a merc with a profile that was the perfect fit for their patsy, placed an RV upon one of the entries.

The second night, they switched locations to avoid too many questions of an RV sitting in one place.

Milint instead dispatched Warner with a brief fire exchange.

These were the first gun shots, and they were indeed coming from the RV.

It would be Warner's remains that would be the only ones reported as they needed their story.

Milintel entered the RV and made quick work of the entry, securing it to prevent a rear attack.

They now only faced the other ahead of them.

From the first shots to the second battle, was no more than 15 minutes.

The second battle was with those hostiles already under street level, during which the hostiles remotely activated the explosive device, setting off the bomb warning from the street lamps.

The fact that there would be a third gun battle indicates Milint had dispatched that group.

Milint quickly gained entry at their objective and did whatever they had to do.

From the second set of gunfire to the third firefight during their exit, was again no more than 15 minutes.

On the way out, they faced the other team who had been street side, the third gun battle.